Improvement in railway-car axles



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n.. N; ALLEN. Railwy Gar Axles.

No. 139,226. mgl PatentedM2113,27,1373.`

Witnesses. jlhvehion AM. PHo-umoGRAfH/c a Mx(assaRr/Efs macass) UNITEDSTATES PATENT OFFICE."

' RICHARD N. ALLEN, 0E PITTsFoRD, VERMONT.

IMPROVEMENT IN RAILWAY-CAR AXLES.

Specification forming part of Letters Patent No. 139,226, `dated May27,1873; application filed f March 3, 1873.

' Pittsford, in the county of Rutlandand State of Vermont, have inventedcertain new and useful Improvements in Railway-Car Axles, of

which the following is a description:

Figure 1 is aside view of the axle. Figs. 2, 3, and 4 are detachedsections. Fig. 5 is a longitudinal transverse section.

Like letters of reference refer to like parts in the several views.

The nature of my invention relates to arailway-car axle, and the objectthereof is to cause a continued revolution of the wheels while roundinga curve, thereby avoiding the dragging of the wheel on the outer line ofthe track-curve, and the consequent friction and strain upon the axleand housing of the car &c. Of the construction and operation of theaforesaid axle, the following is a description.

A, in Fig. 1, represents a hollow shaft, on each end of which isscrewed, or otherwise secured, a head, B. To said shaft is closely butloosely fitted a pair of sleeves, C D, which abut against each other atthe middle of the y shaft, as shown in Fig. 1 by dotted lines a. A

detached view of one of the sleeves is shown in Fig. 3. Over thejoint,formed by abutting the two ends of the sleeves, is fitted a collar, E,as shown in Figs. 1 and 5. A detached view of the collar is shown inFig. 4. In order to prevent the collar from sliding laterally on theshaft, the end of each of the sleeves is reduced in diameter, therebyforming a shoulder, b, Fig. 3. Between the two shoulders the collar isconfined, as shown in Fig. 5. The outer end of eachof the sleeves isalso reduced in diam eter, as shown at F, Figs. 4 and 5, formingjournals.

It will be obvious that wheels secured to au f axle constructed as abovedescribed will both turn on the shaft A in the same direction, orreversely with each other, as the case may be; .y and, also,independently of each other, as, Q

the sleeves to which `the wheels are secured are free to-rotateon theshaft separately and according to the time of curvature. Therefore,there will be no dragging of the wheels. y On the outer rail, as thewheels will continue to revolve, though dilferentially, as the dierencein the two rails may be. The sleeves are" oiled along the length of theshaft by pouring oil into the hollow of the shaft, from which it workslout through small perforations' made in l the side ofthe shaft.

Claim. What VI claim as my invention, and desire to secure by LettersPatent, is-

The hollow shaft A, nuts B, sleeves (l D, and

collar E, all constructed and combined to operate in the manner asandfor the purpose s et l forth. y

, RICHARD N. ALLEN. Witnesses:

W. H. BURRIDGE, A. F. GoNNELL.

